juvederm cheek infection after one day. Could I have 0.5cc Syringe? (Photo)

Got Juvederm injection by a Nurse at a spa not a Doctor. On left side I got injected 0.4 cc and on right side 0.1 cc and next day , my right cheek got all red and 2nd day , my lower eye lid got red. Questions: 1-Does Juvederm offer 0.5cc or she used an open packaged ? 2-They asked me to take Cephalexin and almost killed the infection but my cheek got dark skin. Will my skin stays dark or go away? 3-Does Cephalexin removes Juvederm from my face? if yes , I would like to get my money back .